If I try to connect to Urban Terror (game) over the wireless router it resets my internet connection. But when I attempt to do this through the cable modem I can connect to the game. I hear that this is only an issue of opening ports- but I haven't ever done this before. Can someone help me?
Look up Port Triggering in your owners manual that came with the router or on the manufacturer website. Permanently opening the ports on the router is a security risk and can leave you vulnerable to attacks. Using Port Triggering only opens the port when it needs to be open, instead of all the time like port forwarding would.